pvlib.clearsky.haurwitz#

pvlib.clearsky.haurwitz(apparent_zenith)[source]#

Determine clear sky GHI using the Haurwitz model.

Implements the Haurwitz clear sky model for global horizontal irradiance (GHI) as presented in [1, 2]. A report on clear sky models found the Haurwitz model to have the best performance in terms of average monthly error among models which require only zenith angle [3].

Parameters:

apparent_zenith (Series) – The apparent (refraction corrected) sun zenith angle in degrees.

Returns:

ghi (DataFrame) – The modeled global horizonal irradiance in W/m^2 provided by the Haurwitz clear-sky model.

References